Left Bundle Branch Block

Is Left Bundle Branch Block considered congential heart disease if it is something I was born having?

[kenkeith]

For an insight into heart contractility:  Left bundle branch block (LBBB) is when there is a defect in the left bundle branches (located on the wall (septum) that separates lower heart chambers) that convey electrical signals to the ventricles; if the defect is in the right bundle branch, it is called right bundle branch block (RBBB).

Defect can be due to a prior heart attack, viral, drugs, etc. that damage septum cells  or it can be congenital.  It could be medically insignificant or significant.  Not uncommon to have skipped heartbeats or a double beat due bundle branch block.

[Mwbell]

I'm writing you about this LBBB because you seem to know all about it.  My girlfriend was diagnosed with it and has been prescribed coreg 3.125 twice a day.  This med has caused her to go up in pants size from an 8 to now a 12.  She's getting really upset over this and so I'm asking you if there is something else out there that does the same t hing as coreg but doesn't make a person gain weight?
thanks for your time......